We consent to the incorporation by reference
in the Registration Statements on Form S-3 (No. 333-203595 and 333-213654) and Form S-8 (No. 333-217480) of Stellar Biotechnologies,
Inc. of our report dated December 1, 2017, relating to the consolidated financial statements of Stellar Biotechnologies, Inc.,
which report appears in this Annual Report on Form 10-K for the year ended September 30, 2017.